Notify the sim state after callback registration.

Notify the register the current sim state right away in
registerSimStateCallback.Otherwise the register won't
receive any state until sim state gets changed again.
That will introduce a racing condition. If the sim state
changes to PUK_LOCKED after registering the callback, the
PUK unlock screen shows up. If the sim state changes to
PUK_LOCKED before registering, the PUK unlock screen won't
show.

bug:5243771
Change-Id: I27de1329a30adba68952cf086d2130c4cef54270

Author: John Wang

policy/src/com/android/internal/policy/impl/KeyguardUpdateMonitor.java

@@ -484,6 +484,9 @@ interface SimStateCallback {
     public void registerInfoCallback(InfoCallback callback) {
         if (!mInfoCallbacks.contains(callback)) {
             mInfoCallbacks.add(callback);
+            // notify the register the current state right away
+            // TODO: need call other callback methods
+            callback.onRefreshCarrierInfo(mTelephonyPlmn, mTelephonySpn);
         } else {
             if (DEBUG) Log.e(TAG, "Object tried to add another INFO callback",
                     new Exception("Whoops"));
@@ -497,6 +500,10 @@ public void registerInfoCallback(InfoCallback callback) {
     public void registerSimStateCallback(SimStateCallback callback) {
         if (!mSimStateCallbacks.contains(callback)) {
             mSimStateCallbacks.add(callback);
+            // notify the register the current sim state right away,
+            // otherwise the register won't receive any state until
+            // sim state gets changed again.
+            callback.onSimStateChanged(mSimState);
         } else {
             if (DEBUG) Log.e(TAG, "Object tried to add another SIM callback",
                     new Exception("Whoops"));